The new one in particular is rather...large. Super-temporary test install: (Note the cell for scale). For those who didn't see the thread elsewhere, I paid $250 shipped for the larger new one bowdown: )... PPI PC21400.2. The smaller is my existing 6600.2. Currently running it in stereo because i fear what it'll do to my subs bridged. Once I have more time to mess around with my processor I can probably get the gain low enough to be safe in a bridge, which will work better than stereo for the subs. Anyway, as its wired now I have 300W (12V) a side to the component set up front, 50W a side to my auras and ~400 each to the 2 12's. Quite loud The Bostons aren't known for their output but the rear window flexes quite noticibly (fire sealed into the cabin) and the antenna on top may as well be an oscilloscope More importantly, holy hell it sounds good Pics of the proper install will follow as I finish it.